The old SP-Studios aren't easy to find. A recommendation for plug-ins would also be useful.
It's not for the contest. I already submitted my entry. - Uploading the file would be a solution, if it's not to much of an inconvenience.
Here is a link for all the old sp-studio versions that require Flash
https://www.sp-studio.de/w/the-old-sp-studios/
And I got a chrome extension called Ruffle that enables Flash
https://ruffle.rs/